workflow scriv -> mmd -> latex - permission error


I’m trying to compile to mmd - latex, but run into a couple of issues.
Where do I best post my questions?
Should these go into the mmd section? Or?

When I compile to mmd - latex, Scrivener throws some kind of permission error.

A search revealed this may have to do with LaTeX.
Or is this some setting in the scrivener file? (I’m trying to compile the User Manual as an exercise to work from)
I tried a 2nd compile to a folder on the Desktop - same error.

Thanks for any tips!